blocks|key|1237777|text|"cls“和"+clear”是清除终端的命令(即DOS提示符或终端窗口)。从您的屏幕截图可以看出，您使用的是IDLE中的shell，它不会受到这些东西的影响。不幸的是，我不认为有一种方法可以在空闲时清除屏幕。你能做的最好的就是向下滚动屏幕上的很多行，例如：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1237778|print+("\n"+*+100)|code-block|syntax|javascript|1237779|尽管您可以将其放入一个函数中：|1237780|def+cls():+print+("\n"+*+100)|1237781|然后在需要的时候调用它作为cls()|offset|length|style|CODE|1237782|entityMap^0|0|0|0|0|D|5|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|T|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|U|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|V|8|@]|9|@]|A|$E|F]]|$1|K|3|L|5|6|7|W|8|@$M|X|N|Y|O|P]]|9|@]|A|$]]|$1|Q|3|-4|5|6|7|Z|8|@]|9|@]|A|$]]]|R|$]]

The &quot;cls&quot; and &quot;clear&quot; are commands which will clear a terminal (ie a DOS prompt, or terminal window). From your screenshot, you are using the shell within IDLE, which won't be affected by such things. Unfortunately, I don't think there is a way to clear the screen in IDLE. The best you could do is to scroll the screen down lots of lines, eg:
<pre><code>print (&quot;\n&quot; * 100)
</code></pre>
Though you could put this in a function:
<pre><code>def cls(): print (&quot;\n&quot; * 100)
</code></pre>
And then call it when needed as <code>cls()</code>

blocks|key|1452497|text|os.system('clear')可以在linux上运行。如果你运行的是windows，那就试试os.system('CLS')吧。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1452498|您需要先导入os，如下所示：|1452499|import+os|code-block|syntax|javascript|1452500|entityMap^0|0|I|1D|G|0|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@$9|P|A|Q|B|C]|$9|R|A|S|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|T|8|@]|D|@]|E|$]]|$1|H|3|I|5|J|7|U|8|@]|D|@]|E|$K|L]]|$1|M|3|-4|5|6|7|V|8|@]|D|@]|E|$]]]|N|$]]

<code>os.system('clear')</code> works on linux. If you are running windows try <code>os.system('CLS')</code> instead.

You need to import os first like this: 

<pre><code>import os
</code></pre>

blocks|key|1237873|text|用于清除外壳的扩展可以在Issue6143中作为"feature+request“找到。此扩展包含在IdleX中。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|1237874|entityMap|0|LINK|mutability|MUTABLE|url|http://bugs.python.org/issue6143|1|http://idlex.sourceforge.net/^0|C|9|0|1E|5|1|0^^$0|@$1|2|3|4|5|6|7|N|8|@]|9|@$A|O|B|P|1|Q]|$A|R|B|S|1|T]]|C|$]]|$1|D|3|-4|5|6|7|U|8|@]|9|@]|C|$]]]|E|$F|$5|G|H|I|C|$J|K]]|L|$5|G|H|I|C|$J|M]]]]

An extension for clearing the shell can be found in <a href="http://bugs.python.org/issue6143" rel="noreferrer">Issue6143</a> as a "feature request". This extension is included with <a href="http://idlex.sourceforge.net" rel="noreferrer">IdleX</a>.

blocks|key|1237915|text|>>>+import+os

>>>def+cls():
...++++os.system("clear")
...
>>>cls()|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|1237916|这样做是完美的。也没有打印'0‘。|unstyled|1237917|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$B|C]]|$1|D|3|E|5|F|7|J|8|@]|9|@]|A|$]]|$1|G|3|-4|5|F|7|K|8|@]|9|@]|A|$]]]|H|$]]

<pre><code>&gt;&gt;&gt; import os

&gt;&gt;&gt;def cls():
... os.system("clear")
...
&gt;&gt;&gt;cls()
</code></pre>

That does is perfectly. No '0' printed either.

blocks|key|1237819|text|似乎没有一种方法可以清除空闲的“shell”缓冲区。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1237820|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

There does not appear to be a way to clear the IDLE 'shell' buffer.

blocks|key|1237711|text|在Python+2.4%2B中执行命令的方法是使用subprocess模块。您可以像使用os.system一样使用它。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1237712|import+subprocess
subprocess.call("clear")+#+linux/mac
subprocess.call("cls",+shell=True)+#+windows|code-block|syntax|javascript|1237713|如果在python控制台中执行此操作，则需要执行一些操作来隐藏返回值(对于os.system或subprocess.call)，比如将返回值赋给一个变量：|1237714|cls+=+subprocess.call("cls",+shell=True)|1237715|entityMap|0|LINK|mutability|MUTABLE|url|http://docs.python.org/library/subprocess.html^0|16|9|N|A|0|0|0|11|9|1B|F|0|0^^$0|@$1|2|3|4|5|6|7|W|8|@$9|X|A|Y|B|C]]|D|@$9|Z|A|10|1|11]]|E|$]]|$1|F|3|G|5|H|7|12|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|13|8|@$9|14|A|15|B|C]|$9|16|A|17|B|C]]|D|@]|E|$]]|$1|M|3|N|5|H|7|18|8|@]|D|@]|E|$I|J]]|$1|O|3|-4|5|6|7|19|8|@]|D|@]|E|$]]]|P|$Q|$5|R|S|T|E|$U|V]]]]

The way to execute commands in Python 2.4+ is to use the <a href="http://docs.python.org/library/subprocess.html" rel="noreferrer">subprocess</a> module. You can use it in the same way that you use <code>os.system</code>.

<pre><code>import subprocess
subprocess.call("clear") # linux/mac
subprocess.call("cls", shell=True) # windows
</code></pre>

If you're executing this in the python console, you'll need to do something to hide the return value (for either <code>os.system</code> or <code>subprocess.call</code>), like assigning it to a variable:

<pre><code>cls = subprocess.call("cls", shell=True)
</code></pre>

blocks|key|1238190|text|我喜欢使用：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1238191|import+os
clear+=+lambda+:+os.system('cls')+#+or+clear+for+Linux

clear()|code-block|syntax|javascript|1238192|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

I like to use:

<pre><code>import os
clear = lambda : os.system('cls') # or clear for Linux

clear()
</code></pre>

blocks|key|1238375|text|似乎没有直接的方法来清除空闲的控制台。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1238376|我的一种方法是使用exit()作为python脚本(.py)中的最后一个命令。当我运行脚本时，它总是在退出前打开一个新的控制台和提示符。|1238377|优点:每次执行脚本时，控制台都会重新启动。缺点:每次执行脚本时，控制台都会重新启动。|1238378|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|H|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|I|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|J|8|@]|9|@]|A|$]]|$1|F|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|G|$]]

It seems like there is no direct way for clearing the IDLE console.

One way I do it is use of exit() as the last command in my python script (.py). When I run the script, it always opens up a new console and prompt before exiting.

Upside : Console is launched fresh each time the script is executed.
Downside : Console is launched fresh each time the script is executed.

blocks|key|1237856|text|正如mark.ribau所说，似乎没有办法在idle中清除文本小部件。用户应该编辑EditorWindow.py模块，并在EditorWindow类中添加一个方法和一个菜单项，如下所示：|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1237857|self.text.tag_remove("sel",+"1.0",+"end")
self.text.delete("1.0",+"end")|code-block|syntax|javascript|1237858|也许还有一些我不知道的标签管理。|1237859|entityMap^0|15|F|0|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@$9|P|A|Q|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|R|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|S|8|@]|D|@]|E|$]]|$1|M|3|-4|5|6|7|T|8|@]|D|@]|E|$]]]|N|$]]

As mark.ribau said, it seems that there is no way to clear the Text widget in idle. One should edit the <code>EditorWindow.py</code> module and add a method and a menu item in the EditorWindow class that does something like:

<pre><code>self.text.tag_remove("sel", "1.0", "end")
self.text.delete("1.0", "end")
</code></pre>

and perhaps some more tag management of which I'm unaware of.

blocks|key|1238230|text|这些解决方案在我的Windows7和IDLE中都不起作用。结束使用PowerShell，在其中运行Python，然后退出以在PowerShell中调用"cls“来清除窗口。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1238231|缺点:假设Python已经在PATH变量中。此外，这确实会清除您的Python变量(尽管重启shell也是如此)。|1238232|优点:保留你所做的任何窗口定制(颜色，字体大小)。|1238233|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|H|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|I|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|J|8|@]|9|@]|A|$]]|$1|F|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|G|$]]

None of these solutions worked for me on Windows 7 and within IDLE. Wound up using PowerShell, running Python within it and exiting to call "cls" in PowerShell to clear the window. 

CONS: Assumes Python is already in the PATH variable. Also, this does clear your Python variables (though so does restarting the shell).

PROS: Retains any window customization you've made (color, font-size).

blocks|key|1238050|text|在windows上最好的方法是使用命令提示符'cmd‘并访问python目录。命令提示符可以在开始菜单>run>cmd中找到。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1238051|C:\>cd+Python27
C:\Python27>python.exe
Python+2.7.3+(default,+Apr+10+2012,+23:24:47)+[MSC+v.1500+64+bit+(AMD64)]+on+win32
Type+"help",+"copyright",+"credits"+or+"license()"+for+more+information.
>>>import+os
>>>os.system('cls')++#This+will+clear+the+screen+and+return+the+value+0|code-block|syntax|javascript|1238052|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

The best way to do it on windows is using the command prompt 'cmd' and access python directory the command prompt could be found on the start menu >run>cmd

<pre><code>C:\&gt;cd Python27
C:\Python27&gt;python.exe
Python 2.7.3 (default, Apr 10 2012, 23:24:47) [MSC v.1500 64 bit (AMD64)] on win32
Type "help", "copyright", "credits" or "license()" for more information.
&gt;&gt;&gt;import os
&gt;&gt;&gt;os.system('cls') #This will clear the screen and return the value 0
</code></pre>

blocks|key|1238121|text|您可以创建一个AutoHotKey脚本。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|1238122|要将ctrl-r设置为热键以清除shell，请执行以下操作：|1238123|%5Er::SendInput+print+'\n'+*+50+{Enter}|code-block|syntax|javascript|1238124|只需安装AutoHotKey，将上面的内容放在一个名为idle_clear.ahk的文件中，运行该文件，您的热键就会激活。|1238125|entityMap|0|LINK|mutability|MUTABLE|url|http://www.autohotkey.com/^0|7|A|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|U|8|@]|9|@$A|V|B|W|1|X]]|C|$]]|$1|D|3|E|5|6|7|Y|8|@]|9|@]|C|$]]|$1|F|3|G|5|H|7|Z|8|@]|9|@]|C|$I|J]]|$1|K|3|L|5|6|7|10|8|@]|9|@]|C|$]]|$1|M|3|-4|5|6|7|11|8|@]|9|@]|C|$]]]|N|$O|$5|P|Q|R|C|$S|T]]]]

You can make an <a href="http://www.autohotkey.com/" rel="nofollow">AutoHotKey</a> script.

To set ctrl-r to a hotkey to clear the shell:

<pre><code>^r::SendInput print '\n' * 50 {Enter}
</code></pre>

Just install AutoHotKey, put the above in a file called idle_clear.ahk, run the file, and your hotkey is active.

blocks|key|1453065|text|我建议你在Python中使用Thonny+IDE。它的shell有"Clear+Shell“选项，你也可以在单独的列表中跟踪创建的变量。即使与现代IDE相比，它的调试也是非常好的。您还可以在python文件中编写代码，并在同一位置访问shell。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|1453066|而且它的重量很轻！|1453067|entityMap|0|LINK|mutability|MUTABLE|url|http://thonny.org/^0|E|A|0|0|0^^$0|@$1|2|3|4|5|6|7|N|8|@]|9|@$A|O|B|P|1|Q]]|C|$]]|$1|D|3|E|5|6|7|R|8|@]|9|@]|C|$]]|$1|F|3|-4|5|6|7|S|8|@]|9|@]|C|$]]]|G|$H|$5|I|J|K|C|$L|M]]]]

I would recommend you to use <a href="http://thonny.org/" rel="nofollow noreferrer">Thonny IDE</a> for Python. It's shell has "Clear Shell" option and you can also track variables created in a separate list. It's debugging is very good even comparing with modern IDEs. You can also write code in python file along with access to shell at the same place.

And its lightweight!

blocks|key|1452951|text|使用这个|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1452952|for+num+in+range(1,100):
++++print("\n")|code-block|syntax|javascript|1452953|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

use this

<pre><code>for num in range(1,100):
 print("\n")
</code></pre>

blocks|key|1238405|text|乌龟可以清屏。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1238406|#=====================================
import+turtle

wn+=+turtle.Screen()
wn.title("Clear+the+Screen")

t+=+turtle.Turtle()
t.color('red',+'yellow')
t.speed(0)

#=====================================

def+star(x,+y,+length,+angle):
++++t.penup()
++++t.goto(x,+y)
++++t.pendown()
++++t.begin_fill()
++++while+True:
++++++++t.forward(length)
++++++++t.left(angle)
++++++++if+t.heading()+==+0:+#===============
++++++++++++break
++++t.end_fill()
#=====================================
#+++(++x,++++y,++length,+angle)
star(-360,++0,++++150,++++45)
t.clear()
#=====================================|code-block|syntax|javascript|1238407|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

Turtle can clear the screen.
<pre><code>#=====================================
import turtle

wn = turtle.Screen()
wn.title(&quot;Clear the Screen&quot;)

t = turtle.Turtle()
t.color('red', 'yellow')
t.speed(0)

#=====================================

def star(x, y, length, angle):
 t.penup()
 t.goto(x, y)
 t.pendown()
 t.begin_fill()
 while True:
 t.forward(length)
 t.left(angle)
 if t.heading() == 0: #===============
 break
 t.end_fill()
#=====================================
# ( x, y, length, angle)
star(-360, 0, 150, 45)
t.clear()
#=====================================
</code></pre>

blocks|key|1452936|text|这适用于我在Windows中的工作：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1452937|print+chr(12)|offset|length|style|CODE|1452938|entityMap^0|0|0|D|0^^$0|@$1|2|3|4|5|6|7|J|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|K|8|@$D|L|E|M|F|G]]|9|@]|A|$]]|$1|H|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|I|$]]

This works for me in Windows:

<code>print chr(12)</code>

blocks|key|1237985|text|没有必要编写你自己的函数来做这件事！Python有一个内置的clear函数。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1237986|在命令提示符下键入以下内容：|1237987|shell.clear()|code-block|syntax|javascript|1237988|如果使用IPython+for+Windows，则|offset|length|style|CODE|1237989|cls()|1237990|entityMap^0|0|0|0|4|7|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|T|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|U|8|@]|9|@]|A|$G|H]]|$1|I|3|J|5|6|7|V|8|@$K|W|L|X|M|N]]|9|@]|A|$]]|$1|O|3|P|5|F|7|Y|8|@]|9|@]|A|$G|H]]|$1|Q|3|-4|5|6|7|Z|8|@]|9|@]|A|$]]]|R|$]]

There is no need to write your own function to do this! Python has a built in clear function. 

Type the following in the command prompt:

<pre><code>shell.clear()
</code></pre>

If using <code>IPython</code> for Windows, it's

<pre><code>cls()
</code></pre>

I know there's a similar topic about python console, but I do not know if they are the same. I tried system("clear") and it didn't work here.

How do I clear python's IDLE window?

Any way to clear python's IDLE window?

Windows

Python

Linux

我知道关于python控制台也有类似的话题，但我不知道它们是否相同。我尝试了系统(“清除”)，但它在这里不起作用。如何清除python的空闲窗口？

问有什么方法可以清除python的空闲窗口吗？
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回答 17

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问有什么方法可以清除python的空闲窗口吗？
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